Route some traffic via VPN while the rest routed as usual (non-VPN)

I manage some servers where VPN is the only access for maintenance. On Linux, we use xl2tpd, strongswan-starter, and ip-route. I want to gain access to my phone (Pixel 3, Android 12) such that traffic for the servers routes via the VPN, and all else remains routed as usual, not via the VPN.  How may this be done on Android 12?